Copy Physics To Multiple Objects
If you have one object that has physics properties and you wish that the other object had the same properties:


Select all object that you wish to copy the physics properties to
Select the object you wish to copy the physics properties from


note: We select this one last so that It becomes the active selected object. This is the object that has the desired physics properties.

Then In the Physics panel under Object Tools choose Copy From Active.






If none of them have physics properties than you will want to add them:


Select all objects that need physics properties.
Physics -> Add Active